MOLECULAR POLARITYFIELD NOTE 27 / 175

Is Cyclopropane (C3H6) polar or nonpolar?

Cyclopropane (C3H6) is nonpolar because its identical CH2 groups form a symmetric hydrocarbon ring.

THE ANSWERNonpolar.

Cyclopropane · three-membered carbon ring

FIGURE 01

The molecule in space

Drag to turn the molecule. Show angles to read the model geometry.

STRUCTURE / 01
C ×3H ×6
HHHCCCHHH
↻ Drag to rotate · hover or tap for details
Open labeled diagram ↗

01 / MODEL RECORDPubChem 3D coordinates. Atom sizes and bond thickness are illustrative.How model data is used ↗

THE REASONING

Why C3H6 is nonpolar

Cyclopropane has three equivalent carbon positions in a small ring. Its C–C and C–H bond contributions are distributed symmetrically, so there is no substantial permanent dipole.

A USEFUL DISTINCTION

What to notice

A three-membered ring forces C–C–C angles away from the preferred tetrahedral value; do not use a free-chain tetrahedral angle for the ring.

QUICK REFERENCE

Common questions about Cyclopropane (C3H6)

  1. 01
    What does the Lewis structure of Cyclopropane (C3H6) show?

    Three CH2 groups connect in a closed triangle by C–C single bonds. Each carbon also bonds to two H atoms.

  2. 02
    What is the molecular geometry of Cyclopropane (C3H6)?

    Cyclopropane (C3H6) has a three-membered carbon ring molecular geometry. The 3D model shows representative bond angles of 60° and 117.8° and 114.8°. These angles come from the displayed model coordinates.

  3. 03
    What is the molar mass of Cyclopropane (C3H6)?

    C3H6 has an approximate molar mass of 42.08 g/mol, calculated from its formula using abridged standard atomic weights. Natural isotope variation can change the last digits.

KEEP THE IDEA GOING

Compare molecules

Found something unclear or incorrect?Send feedback about C3H6 ↗
ISPOLAR / ELEMENT ATLAS

Explore the elements

Select an element to inspect its electron configuration and reported properties.

Feedback